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Bolt-on horsepower and torque with these ceramic coated long-tube headers by Drake. These headers are designed to fit 66-77 Broncos with 289/302 motors with ample clearance. They are engineered to make strong power and torque throughout the RPM range with smooth mandrel-bent 1-1/2" primaries and 3" collectors. Each header is manufactured with heavy-duty features like extra-thick 3/8" laser cut flanges to guard against warping and heavy-wall 16 ga tubing for maximum durability. This header system includes high quality hardware, premium laminated metal core gaskets, and starter tubes with collector flanges for a professional installation.